1979 Chris Craft 28' Express Cruiser with twin GM181 inboards.

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Jul 10, 2017
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I have a 1979 Chris Craft 28' Express Cruiser with twin GM181 inboards. I am the third owner and I believe one of the two previous owners changed prop sizes. Does anyone know or have the original factory specs for the recommended prop size for this boat? It is currently running with 14x11 3 blade props and I get a maximum speed of 13-15 depending on the tide at 4000 rpm. From my research this boat should have a cruising speed of 20-22. Since this boat has been in Alaska virtually all of its life, I believe one of the previous owners was trying to get its idle speed down to a point where they could troll for kings. Any info would be helpful.
 
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